How to put your DMK Box into Infrastructure Mode

Putting the DMK 11A into Infrastructure Mode

Overview
The DMK Box can be configured to either send data in a pier to pier
mode (Ad-Hoc) or broadcast through an existing onboard router or
hotspot. (Infrastructure Mode) Infrastructure Mode is useful if
there already exists a WiFi Network onboard or if a user wishes to
connect devices that do not easily make Ad-Hoc connections like
Android devices.

There are two main ways of configuring a DMK Box for
infrastructure mode. One way is to have the DHCP Server assign the
box an IP Address and the other is to manually assign the address.
In most cases using the DHCP setting works well however in certain
cases with some brands or routers the box must be manually
configured in order to work. These instructions will cover both
cases. When configuring the box for infrastructure mode, try the
DHCP method first. If that does not work, reset the box and
configure the IP manually.

Part 1.
Putting the DMK 11A in Infrastructure mode using the DHCP
setting.
Step 1: Using the DMK App create a new WiFi Profile in which to
customize and save your Wifi settings. On the left most page in the
app, (Instrument List for the iPhone, Packet Log for the iPad) tap
the Settings/Configuration button. On the top of the next menu will
be the WiFi Profiles button. Tap the WiFi Profiles button to get to
the WiFi Profiles page. Once on the page, tap “Create a New
Profile.”

Step 2: Configure the new profile.
Open the new profile and give it a name. Under Wi-Fi Mode, select
Infrastructure. Select the security setting of the router or
hotspot you intend to broadcast through. Your choices are
Open/WEP/WPA/WPA2. Enter the SSID (network name) of the router the
box will connect with. Enter the security code (WEP Code or PSK) of
the router. Under DMK Box Connection Mode, select DHCP and under
Auto-Detect IP of DMK Box, select Detect

Step 3: Apply the profile to the DMK box.
Tap Apply the Profile button at the bottom of the page and it will
reprogram the DMK Box. The app will prompt you to confirm the
command. Once it is confirmed the page will move to a check list
verifying the reprogramming. If all goes well then the list will
check through green and the app will start a countdown while the
box reboots.

At this point you will no longer see the dmkyacht SSID under
WiFi Networks. Instead the data should be available to any device
connected to the router or hotspot that the DMK 11A has been
configured to broadcast through. Any app configured to listen to
port 1703 and connected to that router or hotspot should see data
from the DMK Box on that network. The green LED inside the

In most cases the above procedure works however sometimes the
box does not receive an address from the network’s DHCP
server. In these cases data will not be broadcast through the
network and the DMK Box must be manually assigned its IP Address.
Before you can reprogram the box again it must get a hard reboot to
put it back into factory default mode. A hard reboot is done by
connecting the Seatalk and ground wires and power cycling the box.
All the LEDs inside the box will blink 8 times letting you know it
has been reset. The procedure is also outlined in Section 4.2 of
the owner’s manual.

Part 2.
Putting the DMK 11A in Infrastructure mode using Manual IP Address
Setting
Overview: In certain cases using the DHCP mode for the DMK Box may
not result in an address being assigned and the box broadcasting
through the router. In these cases the IP address must be assigned
manually.

Step One: Figure out a valid IP Address to assign the DMK
Box.
A valid address will have to be in the correct Subnet and is best
set outside the DHCP range of addresses. To figure out these
settings open the router’s administration page. The
router’s User’s Manual should give you instructions for
how to access the Administration Page. The address you use in the
web browser to access the Administration Page will be the value you
set in the Router field of your WiFi Profile during Step 2.

Inside the Administration Page open the client list and look at
the IP addresses that have been assigned any devices connected to
the router. Note the address range and subnet. Figure 1 is an
example of a typical IP Address.

Figure 1

A typical DHCP address range for a router is around 100. If the
router assigned an address like in Figure 1, then giving the DMK
Box an IP address of 192.168.43.111 would most likely be valid and
outside the DHCP range.

Step 3. Apply the profile to the DMK Box. First tap the
“This is the Active Profile” button in the DMK App,
then tap the “Apply this Profile” button and
confirm.

The app will now give a status on reprogramming the box. If all
went well then it will give green check offs as it reprograms. When
the box resets it will connect to the router and steam through it.
To access the instrument information it is now necessary to connect
to the new router.

If the reprogramming did not give all green checks in its status
and did not reprogram then the most likely cause is a bad
connection between the mobile device and the DMK Box. Make sure you
don’t have two apps fighting over a port connection or two
devices fighting over an IP Address. Force quit other apps that
might be using the boat’s data and make sure all devices
onboard are each set to listen to a unique IP. If all else fails,
email sales@dmkyacht or call the phone number on the side of the
box for technical assistance.